Prime Factors of a Number

public class PrimeFactors {

 public static void main(String[] args) {
  int n = 420;
  int i = 2;
  while (n != 0) {
   if (n % i == 0) {
    System.out.println(i);
    while (n % i == 0) {
     n = n / i;
    }
   }
   i++;
  }
 }
}